For the first 10 days of the new dungeons, only premium passes are allowed. No standards till the 11th march
If this is true, then I'm not impressed....http://www.merlinannualpass.co.uk/misc/standard-pass-restrictions-popup.aspx
"Please be aware that The London Dungeon is closed from the 31st January due to relocation. It will be re-open to Passholders from 11th March 2013 in it's new place next to The EDF Energy London Eye!"
This is well hidden I was planning on going but that really isn't impressive IMO, but I know they don't want thousands and thousands of pass holders flooding there and getting queue jump and general public who are paying the ridiculous entry price will not get in and Merlin won't get their money.
But if your a pass holder you can book for the preview event http://thenewlondondungeonpreview-web.eventbrite.com/
I think I will avoid the new dungeons for some time, to be honest I wasn't that impressed with the old ones. I would only go again as its included on the pass. But out of all the attractions Merlin have the only one I would pay cash to get in if I didn't have a MAP would be Alton and Chessie, and I would only do that on a BOGOF.